Meat grinder



r May.14,1940. o. R. ARDREY I 2.200186 MEAT GRINDER Filed NOV. 15, 1938 2 Sheets-Sheet l W 9 \111 i I I a 63 Inventor 0775 RARDREY,

A iiomeys Patented May 14, 1940 Q UNITED STATES PATENT OFFiCE MEAT GRINDER Otis Roy Ardrey, Jefferson City, Mo. Application November 15, 1938, Serial No. 240,562

, Claims. (Cl. 146-487) My invention relates generally to a meat casing 1 has the external screw threads H on grinder and the like, and particularly to an arits right hand end which is arranged to receive rangement of this character in which the operathe wheel cap which is generally designated l2, tion of initially grinding the meat or the like is which wheel cap in the present invention is resucceeded by an operation of grinding the meat placed by an adapter or attachment cap which or the like to a finer size, without interruption is generally designated 53 and which is formed between the operations, and an important object substantially similarly to the screw cap l2 except of my invention is to provide a simple and efthat the attachment cap 13 is provided at suitficient arrangement of this character. ably circumferentially spaced intervals with Another important object of my invention is to pairs of lugs M which define keeper seats for re- 10:

provide in a meat grinder or the like a removable ception of the swingable clamping bolts I 5 which attachment for the discharge end of the grinder are provided with tightening nuts It to engage so arranged as to receive the initially ground the longitudinally inward side of the lugs M as meat or the like from the discharge end of the shown in Figures 2 and S of the drawings, the

15 grinder and immediately operate upon the same clamping bolts being mounted on pivots ll sup- 15v to produce a still finer consistency, thereby saving ported between lugs I8 on the exterior of the atthe trouble and expense ordinarily involved in tachment casing or secondary unit IS. A further producing the desired fineness of grind, and at variation in the form of the attachment cap It the same time providing for a less spoiled confrom the conventional wheel cap I2 is the elimidition of the meat or the like as the result of nation of the radially inwardly extending annu- 20 the reduction of the same to the desired grind. lar shoulder 20 and the replacement thereof with Other important objects and advantages of my the beveled surface 2! which conformably reinvention will be apparent from a reading of the ceives a similar beveled surface 22 on the axially following description taken in connection with inward end of the attachment casing [9. Keys the drawings, wherein for purposes of illustration or pilot pins 23 engage the axially inward end of 25 I have shown a preferred embodiment of my the attachment casing l9 and the adjacent part invention. of the attachment cap it as illustrated in Figure In the drawings: 3 to prevent relative rotation of the attachment Figure 1 is a general side elevational view of cap and the attachment casing I9. the embodiment showing the attachment in place As in the case of the wheel cap I2 the attach- 30 on a conventional meat grinder. ment cap it has a shoulder 24. which holds the Figure 2 is an enlarge ongitud a Vert ca grinding plate 25 in place against a groove 26 in sectional view taken through Figure l. the axially outward end of the grinder casing I.

Figure 3 is a still further enlarged longitudinal In the instance of the grinding plate 25 the collar vertical sectional view taken through the ator extension 2'! which exists on the conventional 35 tachment and t j t p t n f th ngrinding plate 28 is removed so that both sides ventional grinder. of the grinding plate 25 are smooth and fiat, the Figure 4 is a transverse vertical sectional View conventional grinding plate 28 being used in the taken hr Figure 3 O a r uced Scale and attachment casing It in a manner to be deapproximately 0n the line and looking oscribed, and being replaced in the grinder casing ward the left in the direction of the arrows. 1 by the grinder plate 25. Both plates are perfo- Figure 5 is an end v ti a v w f Fi u e rated as indicated by the respective numerals 29 3 taken from right to left. and 30, the perforations 30 being smaller than Referring in detail to the drawings, the uthe perforations 29 in order to achieve the demoral 5 generally signates the primary u sired reduction in size of the particles of meat 45 this being a conventional form of grinder for or the lik meat or the like which comprises t hopper 5 The right hand end of the screw feed 8 in the which rises from and is in communication with grinder casing I has an axial opening which has the left hand end portion Of a horizontal generalan en1a1'ged threaded part 3| and a, redu d u y ylindrical casing 1 in which is axially m u threaded or smooth part 32 into which projects 5 ed the worm or feed screw device 8 which has a the smooth round portion 33 of the stub shaft Stub Shaft 9 turning in a journal opening H! in which has the threaded part 34 received in the the left hand extremity of the casing I to which threaded bore 3| and also the squared part 35 is attached an operating handle which is either on which the squared bore of the cruciform cut- 55. manually or power driven. The conventional ting knife 36. isv non-revolub-ly mounted to bear against the cutter plate 25. The said stub shaft has a further reduced smooth part 3'! which passes freely through an opening in the center of the plate 25 and beyond this has a squared portion 38 which passes freely through an opening in the diametrical brace or spider 39 which is fastened in the left hand end of the attachment casing I9 as clearly shown in Figure 3. The axially outward face of this element 39 has a bearing opening All in which turns the smooth end portion of the threaded coupling or bushing 4| which has a squared bore receiving the squared portion 38 of the said stub shaft, thereby connecting the stub shaft operatively to the attachment worm feed "32 which operates in the attachment casing l 9. Another stub shaft, this one generally designated by the numeral 63 and similar in all respects to the first described stub shaft is similarly connected to the right hand or axially outward end of the attachment feed screw 42 and to an additional cutter knife M similar to the cutter knife 36 which operates in conjunction with the conventional cutter plate 28. As already intimated the cutter plate 28 is held in place on the right hand end of the attachment casing I 9 by the wheel cap i2 which with the cutter plate was removed from the conventional meat grinder for this new location in accordance with the present invention.

Although I have shown and described herein a preferred embodiment of my invention, it is to be definitely understood that I do not desire to limit the application of the invention thereto, and any change or changes may be made in the structure and arrangement of the parts, within the spirit of the invention and the scope of the subjoined claims.

Having described the invention, what is claimed as new is:

1. In a twin style progressive product reduction grinder of the class described, a component auxiliary device comprising a secondary unit including an open-ended cylinder having an integral centrally apertured spider at one end, said one end being beveled, the inner face of the hub portion of said spider being formed with a socket constituting a bearing, an apertured disk at the opposite end of said cylinder, a removable clamping and retention ring on the last named end of said cylinder holding said disk in place, a feeding worm axially mounted for rotation in said cylinder and having a journal at one end cooperable with said disk, there being a bushing at the opposite end functioning as a journal and mounted for rotation in said bearing, said bushing having internal flat faces for accommodation of a companion driving member, bolts pivotally mounted on diametrically opposite external portions of the cylinder, and clamping nuts carried by said bolts in the manner and for the purposes described.

2. A dual first and second stage grinder for progressively reducing the ground product to desired consistency comprising a main unit in eluding a cylinder, a feeding Worm mounted for rotation in said cylinder, an apertured disk fitted in the discharge end of the cylinder, an adapter collar removably mounted on the discharge end and having a beveled retention flange holding said disk in place, said adapter collar being provided with diametrically opposed outstanding lugs forming keeper seats, a stub shaft carried by the discharge end of the feeding Worm and extending through and beyond the disk, a cutter on said stub shaft in rotatable contact with the adjacent inner face of said disk, a sec ondary unit of an intact independent type comprising a cylinder beveled at its inner end to engage the beveled flange, a spider in said cylinder formed integral therewith and having its stub portion centrally apertured and provided with a socket forming a bearing, a worm having a coupling forming bushing constituting a journal and rotatable in said bearing, the projecting end of said stub shaft being located in said bush-, ing and having a driving fit therewith, an apertured disk at the discharge end of the secondary cylinder, removable retaining means on the cylinder holding the disk in place, the adjacent end of the feeding worm in said secondary cylinder having rotatable supporting connection with said disk, a cutter on said supporting connection cooperable with the disk, bolts externally and pivotally mounted on the secondary cylinder and engageable in said keeper seats, and thumb nuts carried by the threaded ends of the bolts in the manner and for the purposes described.

3. As a new article of manufacture, a component part of a dual progressive grinder of the class described, a primary grinding unit comprising a casing including a cylinder externally screw-threaded at the discharge end thereof, an adapter collar threaded on said discharge end and provided with peripheral outstanding lugs forming keeper seats, said collar having on its inner periphery a beveled flange, one face thereof forming a disk accommodation and retention shoulder, the beveled side of said flange functioning to accommodate a companion beveled end of a complemental secondary grinder unit, a. feeding worm mounted forrotation in-said cylinder, a perforated disk removably mounted in the discharge end of the cylinder and abutting said shoulder forming flange, said disk being smooth and devoid of projections on opposite faces, a stub shaft attached to the feeding worm and projecting through and beyond an aperture in said disk, the projecting end being of polygonal cross-sectional form to provide a driving element, and a cutting member on the stub shaft interposed between the worm and disk and coacting with said disk.

4. A twin-style continuous first and second stage grinder of the class described comprising a primary unit having internal self-contained mechanism including a feeding worm, an apertured end disk, cutters cooperable with said disk, and adapter means maintaining the parts constantly assembled for independent grinding, said adapter means being designed to accommodate a secondary companion unit; and a secondary companion unit in longitudinal axial alignment with said primary unit, said secondary unit being wholly complete within itself and including a cylinder, a feeding worm, a hearing at one end of the cylinder accommodating said feeding worm, an apertured end disk at the opposite end of the cylinder supporting and accommodating the adjacent and of said feeding worm, and quick releasable means on said secondary unit engageable with said adapter means,'whereby to 5. .In. a twin-style progressive product reduc-;

tion grinder of the class described, a component auxiliary device comprising a secondary unit ineluding an open-ended cylinder having a hearing at one end, said one end of the cylinder being beveled, an apertured disk at the opposite end of said cylinder, a removable clamping and retention ring on the last-named end of said cylinder holding said disk in place, a feeding worm axially mounted for rotation in said cylinder and having a journal at one end cooperable with said disk, there being a bushing at the opposite end functioning as a journal and mounted for rotation in said bearing, said bushing havinginternal flat faces for accommodation of a companion mo- 5 tion transmitting and driving member.

OTIS ROY ARDREY. 

